Eur. Phys. J. Plus (2019) 134: 91
https://doi.org/10.1140/epjp/i2019-12527-0

Regular Article

BSA films as sensitive coatings for gas sensors: adsorption properties, application perspectives

V. Lashkaryov Institute of Semiconductor Physics NAS of Ukraine, Kyiv, Ukraine

^* e-mail: kruglenko@yahoo.com

Received: 2 May 2018
Accepted: 21 January 2019
Published online: 7 March 2019

Abstract

The possibility of application of BSA-based sensitive films for the development of gas sensors is investigated. BSA was deposited on three types of surfaces: fullerenes C60, NiTAA organic film and the silver electrode of a QCM sensor. Two of the resulting films, namely Ag-BSA and C60-BSA, have demonstrated big response values to a range of analytes, good repeatability, reversibility and long-term stability. The adsorption properties of the films strongly depend on the nature of the bottom layer. This opens a possibility to develop protein-based sensitive layers for multisensor arrays with predefined adsorption properties.